Generation Hop up brackets to be removed and boards moved to lift above.

Transcription

1 Denotes Ladder for Access from 2nd Lift to Extenda Bracket Generation Hop up brackets to be installed to manufacturer's instructions. Installed at 1200mm c/c max & 1050mm down from top of wall section. Scaffold Erection and Adaption Schedule. 4.5m lift not to be boarded but ledgers and transoms may be installed to speed up next phase Phase 1 Phase 2 Phase 1 Scaffold, with two boarded lifts, to be built in it entirety to allow 1st story of block-work to be built and floor cassettes to be installed. Phase 2 Once ties have been installed in line witrh floor cassette, Third boarded lift is to be added and inside boards are to be extended to suit building face to allow 2nd story of block-work to be installed and roof cassettes to be installed. GABLE Table Lift / Hop Up to be erected during phase 2 to finish block-work and give access to roof cassettes. Phase 3 Top lift to be lowered to 1200mm below eaves to allow access to brickwork and soffit. Denotes physical tie into floor cassettes. See Detail. Top lift to be struck and re erected 1200mm below eaves level to complete brickwork and soffit level works Progressive Sections TWO STOREY HOUSE Window Tie Location Phase 3 Gable Section Phase 1 Phase 2 Phase 3 Denotes Scaffold End Cap Board or Packer. Additional standard. Bridle Tube OR 1 Tie Detail Butt Capacity = 12.2kN Tie Capacity = 6.1kN Generation Hop up brackets to be removed and boards moved to lift above. Denotes additional transom to be connected to 90 couplers to either standards or ledgers. Transom is to butt to wall OR Denotes Scaffold End Cap External Hook Apollo Scaffold Screw System into floor cassette Boarded lifts to have double guard rail installed at 730mm and 1200mm above deck with 225mm toe board throughout. Progressive Sections TWO AND A HALF STOREY HOUSE Tie Detail Butt Capacity = 12.2kN Tie Capacity = 6.1kN OR Drawing Status: 1400 Approved for Construction. Gable Section Denotes additional transom to be connected to 90 couplers to either standards or ledgers. Transom is to butt to wall General notes: Property This drawing remains the property of Oryx Scaffold Design Ltd. No unauthorised use, copy or disclosure may be made without written permission from Oryx Scaffold Design Ltd. Basis of design This drawing has been prepared from the information supplied to us by, or on behalf of the contractor, who should check that the requirements have been correctly interpreted and that loading, dimensions, lift heights, bay sizes and erection sequences etc, are as required and practicable. This drawing has been prepared in accordance with the following: BS EN: & BS EN: Working at Height Regulations 2005; BS EN :2005+A1:2010 BS EN :2003 Reference has been made to the following Documentation BS: 5975: 2008 BS: 5973: 1993 NC Document TG20:13. All scaffold materials forming this structure are to comply with BS EN: & BS: 5973:1993; All proprietary equipment must be used in accordance with the manufacturers information. Design loads This scaffold has been designed for the following: 1 no 3kN/m² 1 no 1.5kN/m² Total number of boarded lifts are as shown. Working platforms All working platforms must comply with the statutory regulations at all times. SG4:15 to be used for best practice guidance. Foundations/supports The contractor must prepare all foundations and ensure that they are capable of taking the imposed scaffold loads without undue deflection.where equipment is supported or suspended from an existing structure the contractor must ensure that the existing structure is adequate to safely support the imposed scaffold loads. Maximum Leg Load = 10.33kN Maximum Bearing Pressure = kN/m² Loading Bay checked by s Tie Loads Where scaffold has been designed to be tied to adjacent structure, tests may be required to ensure structure is suitable. TG4:17 to be used for best practice guidance Tie load to structure = 2.31kN TG4:17 Test Load = 3.00kN (1.25FOS) Sheeting/fans No additional wind protection, sheeting or fans etc, to be added to the scaffold structure unless otherwise stated on this drawing. Modifications No alterations are to be made to the scaffold detailed in this drawing without written permission from Oryx Scaffold Designs. Footlift may be omitted for one bay to maintain ground level access and egress. Scaffold has been designed to be uncladded. If cladding is required, site team are to contact ORY Scaffold Design for Advice. Live load allowance: 1No 3kN/m² 1No 1.5kN/m² Soleboard Detail Denotes 225 x 450 mm Base Board. Indicates board bearers to be pulled back to allow access to drop down lift. Plan View Phase Scaffold to be boards wide. Only 1 Bay in use at any time Loading bay gates fitted as per manufacturers instructions. Loading bay suitable for MA 2No 1kg pallets 2.0m Lifts Throughout Loading bay not required for scaffold stability Dimensions All Dimensions are in Millimeters.Written dimensions will take precedence over scaled dimensions. Contractor should note all site dimensions and notify Oryx Scaffold Design Ltd of any discrepancies. The contractor is responsible for accurately setting the position of the scaffold structure. CDM This drawing constitutes the design risk assessment in accordance with regulation 8,9 & 11 of the current CDM regulations Good practice is to be used in the elimination of general risk in the use of temporary works.for guidance please see the relevant codes as provided in HSE publications. Scaffold has been designed to be used with Readylok transoms, Extendable Intermediate Transoms and tenda Hop Up Brackets from Generation Hire and Sales. tenda hop up brackets are to be installed 1050mm below finished floor levels to provide light duty access and edge protection. If using Window Ties. Gables are to be butted to floor levels in locations shown during phase two and phase 3. Butts are to installed as ties and with structural transoms and end caps. Butts may be temporarily pulled back however must be reinstated following completion of work. i.e brickwork Tie Detail Butt Capacity = 12.2kN Denotes Plastic End Cap Denotes additional transom to be connected to 90 couplers to either standards or ledgers. Transom is to butt to wall Indicates board C/L max. Design Continued To Suit Denotes Plan bracing, secured using either swivel couplers to ledgers or 90 couplers to standards/uprights. Plan View Phase Max Section bracing as indicated, secured using load bearing couplers. Additional standards as indicated 1 BRD 5 BRDS 6 BRDS Elevation Plan View Loading Tower Detail For Further Detail please See Drawing 15/OPT/ Standards on baseplates on sole boards on firm level ground. Plan bracing as indicated, secured using load bearing couplers. Board bearers to main deck as indicated at 300mm C/C Max. 24c Shellards Road, Longwell Green, Bristol. BS30 9DU. Tel: ash@oryxdesignltd.co.uk :. Drawing Title: Scaffold for Big Block Construction. Job : Access Scaffold. Scale: 1:100 IS0 A2 Drawing Number: 2018 Drawn: Date: : 06/03/18 Rev: B

2 1 of 5 DESIGN RISK SESSMENT BS:EN performance Requirements and General Design & TG20:13 Codes / British Standards Table 2.1: Load Classes for Working Scaffolds BS EN: Temporary Works Design Table 5.1: Scaffold Component Weights BS EN: Temporary Works Equipment Table 5.9: Sectional Properties of Steel tube BS ; 2005 General actions. Wind actions Table 5.10: Safe axial loads for Steel tube BS:6399: Part 3: 1988 Loading for Buildings Table 5.15: Working Capacities of Couplers Working at Height Regulations 2005 Table C1: Sectional Properties of Aluminium tube BS: 5975: 2008 (Temporary Works Procedures) Table C2: Safe axial loads for Aluminium tube NC Document TG20:13 Manufacturers Information Scaffold Equipment Type 350 Steel Beams Generation R 450 Beam DESSA D78 DESSA Astrix HD M.R. S.R Self Weight 10.4kNm 18.5kNm 18.0kN 12.2kN 0.13kN/m 0.05kN/m 38.87KNm 31.6kN 0.06kN/m kNm 46.6kN 0.13kN/m Type 90 Coupler Swivel Coupler Scaffold Tube Scaffold Board Max Capacity 9.1kN 6.1kN 1.12kNm 0.468kNm Self Weight 1.4kg 1.4kg 4.4kg/m 0.25kN/m² Loading Considerations Stability Considerations Loading type Comments Item Dead / Imposed 3kN/m² & 1.5kN/m² Erection Bracing Wind 0.68kN/m² (See Note) Final Bracing Snow 0.4kN/m² / To be cleared Type of Tie Horizontal Buttress Kentledge / Anchor Comments As shown Apollo Scaffold Screw or Window Tie Assembly Considerations Hazards to the Public Beams Comments Item Built in-situ In-situ Scaffold erection Side Sheeting Craned into position Additional Bracing Lifting Point Walkthrough Protection lift Protection fan Lifting Beam Required Crash deck Comments Uncladded /Debris netting None Considerations Design Considerations Item Types of foundations Obstructions Services (Gas, etc) Overhead wire other Comments Firm and Level ground by main contractor by main contractor by main contractor Wind has been considered for a structure more than 2km from shore. Any scaffold erected within 2km of a shoreline is to be re-checked with ORY Scaffold Design Notes

3 2 of 5 Calculation to determine axial loads to standards Axial loads for independent scaffold Self weight of scaffold per bay (Inside ) item Quantity length tube fittings Standards Ledgers Transoms Board Bearers Guard Rails Section Bracing SW 4.4kg/m 1.60 kn SW 1.4kg/fit 0.32 kn Boards Width (No) Length (m) Lifts (No) Layers (No) LOAD kn Imposed (Working Lift) kn Imposed (Access Lift) kn Imposed (Inside Boards) kn Total weight of bay 3.94 kn <29.1kN Total load per bay kn P 2000mm Table 5.10

4 3 of 5 Calculation to determine axial loads to standards Axial loads for independent scaffold Self weight of scaffold per bay (Outside) item Quantity length tube fittings Standards Ledgers Transoms Board Bearers Guard Rails Section Bracing Face Bracing SW 4.4kg/m 2.03 kn SW 1.4kg/fit 0.43 kn Boards Width (No) Length (m) Lifts (No) Layers (No) LOAD kn Toe Boards Width (No) Length (m) Lifts (No) Layers (No) LOAD kn Imposed (Working Lift) kn Imposed (Access Lift) kn Total weight of bay 3.99 kn Total load per bay 9.03 kn <29.1kN P 2000mm Table 5.10

5 4 of 5 Calculations for bearing pressures Maximum load per standard: = kn Bearing pad size = 0.10 m² Load under sole board = kn/m²

6 5 of 5 Calculation for Capacities of ties Load to butt Spacing of Ties (m²) = Solidarity ratio = 0.35 Dynamic pressure (kn/m = Cf = 1.2 Cs = 1.0 Load to butt = 7.71 kn <18.2kN 2No Couplers Load to Ties Spacing of Ties (m²) = Solidarity ratio = 0.35 Dynamic pressure (kn/m = Cf = 1.2 Cs = 0.3 <9.1kN Load to butt = 2.31 kn Tie Capacity